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Other Intangible Assets
 3 Months Ended
Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets Disclosure [Text Block] OTHER INTANGIBLE ASSETS
The gross carrying amounts and accumulated amortization of other intangible assets by major class are as follows: 
(In millions)March 31, 2021December 31, 2020March 31, 2020
 GrossAccumulated
Amortization		NetGrossAccumulated
Amortization		NetGrossAccumulated
Amortization		Net
Intangible assets subject to amortization (Definite-lived):
      
Germplasm$6,265 $(380)$5,885 $6,265 $(317)$5,948 $6,265 $(126)$6,139 
Customer-related
1,956 (404)1,552 1,984 (380)1,604 1,956 (293)1,663 
Developed technology
1,485 (565)920 1,451 (525)926 1,463 (409)1,054 
Trademarks/trade names1
2,013 (112)1,901 2,019 (99)1,920 166 (88)78 
Favorable supply contracts
475 (326)149 475 (302)173 475 (231)244 
Other2
405 (238)167 405 (239)166 400 (218)182 
Total other intangible assets with finite lives
12,599 (2,025)10,574 12,599 (1,862)10,737 10,725 (1,365)9,360 
Intangible assets not subject to amortization (Indefinite-lived):
      
IPR&D10 — 10 10 — 10 10 — 10 
Trade name1
1,871 — 1,871 
Total other intangible assets10 — 10 10 — 10 1,881 — 1,881 
Total$12,609 $(2,025)$10,584 $12,609 $(1,862)$10,747 $12,606 $(1,365)$11,241 
1.Beginning on October 1, 2020, the company changed its indefinite life assertion of its trade name asset to definite lived with a useful life of 25 years. This change is the result of the launch of BrevantTM seed in the retail channel in the U.S. Prior to changing the useful life of the trade name asset, the company tested the asset for the impairment under ASC 350- Intangibles, Goodwill and Other, concluding the asset was not impaired.
2.Primarily consists of sales and farmer networks, marketing and manufacturing alliances and noncompetition agreements.

The aggregate pre-tax amortization expense from continuing operations for definite-lived intangible assets was $183 million and $163 million for the three months ended March 31, 2021 and 2020, respectively. The current estimated aggregate pre-tax amortization expense from continuing operations for the remainder of 2021 and each of the next five years is approximately $537 million, $700 million, $620 million, $606 million, $569 million and $555 million, respectively.